while[ -h "$SOURCE"];do# resolve $SOURCE until the file is no longer a symlink
DIR="$(cd -P "$( dirname "$SOURCE")"&&pwd)"
SOURCE="$(readlink "$SOURCE")"
[[$SOURCE != /* ]]&&SOURCE="$DIR/$SOURCE"# if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
DIR="$(cd -P "$( dirname "$SOURCE")"&&pwd)"
REPOROOT="$(cd -P "$DIR/../../"&&pwd)"
if[ -z "$DOTNET_BUILD_VERSION"];then
echo"Provide a version number (DOTNET_BUILD_VERSION) $DOTNET_BUILD_VERSION"&&exit1